### Day 31 - Unit Conversions and Dimensional Analysis - 02.17.16

 Update N/A Review N/ABell RingerHow many sig figs does 10.0350 have?3456none of the aboveSolve: 1.23 m x 0.89 m = ?1.0947 m21.0 m21.09 m21.1 m2none of the aboveSolve: 3.12 g + 0.8 g + 1.033 g = ?5.0 g5 g4.9 g4.953 gnone of the aboveA piece of stone has a mass of 24.595 grams and a volume of 5.34 cm3. What is the density of the stone? (remember that density = m/V)0.217 cm3/g0.22 cm3/g4.61 g/cm34.606 g/cm3Convert the following measurement to scientific notation: 101,000 grams1.01 x 105 g1.0100 x 10-5 g10.1 x 104 g1.01000 x 105 g Exit Ticket Posted on the board at the end of the block.HomeworkStudy! Help Request List Standard(s) HS-PS1-7.Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.Emphasis is on using mathematical ideas to communicate the proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole as the conversion from the atomic to the macroscopic scale. Emphasis is on assessing students’ use of mathematical thinking and not on memorization and rote application of problem-solving techniques.